May’s 1939 children’s storybook Rudolph the Red-Nosed Reindeer. While these reindeer are depicted as male, animal experts say otherwise because male reindeer are known to lose their antlers ...

The reindeer pack on fat while they can, and in the fall join up in bigger groups for the rut, when males use their antlers to battle over who gets to mate with females. No one knows exactly how ...